It only (well, I think it does) happens at night. When I'm playing a game, a noise starts buzzing. I don't know where its coming from. I have a fair amount of dust where I live, I have a heater on at night only cause its freezing. Is the heater making the CPU to hot?
Well, you would know how hot it is using something such as MotherBoard Monitor or even Everest ... yet if you need a heater for yourself, I doubt the temperature in the room to be so hot that it is enough to get the CPU to overheat by itself.
Of course, you should check that the fan is still turning at a correct speed, and remove dust from the heatsink if there is some.
Anyway, what do you mean exactly by "buzzing" ? The processor doesn't have an integrated buzzer :p ... is that some kind of beep or something else ? :hmm:
Open up side panel
CAREFULLY place finger tip on center of fan very briefly to stop fan.
If sound goes away fan bearings are going bad and the fan should be replaced with a quality ball bearing HSF unit (Heat sink and fan).
If sound does not go away its not your CPU fan.
Reply with your findings
Whens the last time you cleaned the dust out of your PC? Check your CPU fan, or since you say it happens most when you start gaming, check the fan on your graphics card.
If your fans are getting clogged up with dust it can start making a sound like that when it spins up. I know whenever i clean my PC out after i haven't done it for a long time, it is noticeable quieter.
My last computer was always overheating after few hours open and it was making a little noise. It MIGHT be the problem...
Cum catapultae proscriptae, erunt tum soli proscript catapultas habebunt.
10th November 2006
It might be other wires falling in the way of one of the internal fans of your computer. This happened to me once, when the power wire to the side fan of my chassis kept falling against the CPU fan, and caused a buzzing noise (as well as a damaged wire.) That may be the problem, though it doesn't explain why it only happens at night when gaming. I think Anlushac's explanation is better.
Sorry for the late reply. Thanks for the help. I'll check the fans tomorrow night and get back to you. Thanks!